package com.itheima.reggie.config;

import com.itheima.reggie.Interceptor.LoginCheckInterceptor;
import com.itheima.reggie.common.JacksonObjectMapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;

import java.util.List;

@Slf4j
@Configuration
public class WebMvcConfig extends WebMvcConfigurationSupport {
    @Autowired
    private LoginCheckInterceptor loginCheckInterceptor;

    /**
     * 配置前端映射
     *
     * @param registry
     */
    @Override
    protected void addResourceHandlers(ResourceHandlerRegistry registry) {
        log.info("开始进行静态资源映射....");
        registry.addResourceHandler("/backend/**").addResourceLocations("classpath:/backend/");
        registry.addResourceHandler("/front/**").addResourceLocations("classpath:/front/");
    }

    /**
     * 扩展mvc 框架的消息转换器
     * @param converters
     */
    @Override
    protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        //创建消息转换器对象
        MappingJackson2HttpMessageConverter messageConverter = new MappingJackson2HttpMessageConverter();
        //设置对象转换器 底层使用jackson将Java对象转换为json
        messageConverter.setObjectMapper(new JacksonObjectMapper());
        //将转换器追加到mvc框架的转换器容器中
        converters.add(0, messageConverter);
    }

    /**
     * 拦截器验证登录
     * @param registry
     */
    @Override
    protected void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(loginCheckInterceptor).
                addPathPatterns("/**"). //拦截所有资源
                excludePathPatterns("/employee/login"). // 放行哪些资源
                excludePathPatterns("/employee/logout").
                excludePathPatterns("/backend/**").
                excludePathPatterns("/front/**").
                excludePathPatterns("/user/sendMsg").
                excludePathPatterns("/user/login");
    }
}
